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Helenite and Spinel Optical Properties


Spinel and Helenite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Not Available   
Absent   

Dispersion
Not Available   
0.02   
18

Transparency
Not Available   
Transparent, Translucent, Transparent to translucent   

Refractive Index
Not Available   
1.73   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Isometric   

Birefringence
Not Available   
Not Available   

Clarity
Not Available   
TransparentUlrich Henn and Claudio C. Milisenda   

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Helenite and Spinel Optic Character

Helenite and Spinel optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Helenite and Spinel Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Helenite and Spinel optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Helenite and Spinel Transparency

Similar to their colors, Helenite and Spinel transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Helenite is Not Available while Helenite is Not Available in appearance.

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Green Gemstones


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